1. using the bankaccount class as a base class, write two derived classes called savingsaccount and checkingaccount. 2. add a new private field name of type string to the bankaccount class. 3. add accessor and mutator methods for the name field. 4. a savingsaccount object, in addition to the attributes of a bankaccount object, should have a monthlyinterest variable and a method, which adds interest to the account. assume you are adding the interest accumulated in a month. //monthlyinterest += (accountbalance * (annualinterestrate / 12)) //accountbalance += monthlyinterest public void addinterest() { //code goes here }; 5. the checkinga

File account.java (see previous exercise) contains a definition for a simple bank account class with methods to withdraw, deposit, get the balance and account number, and return a string representation. note that the constructor for this class creates a random account number. save this class to your directory and study it to see how it works. then write the following additional code: 1. suppose the bank wants to keep track of how many accounts exist. a. declare a private static integer variable numaccounts to hold this value. like all instance and static variables, it will be initialized (to 0, since it’s an int) automatically. b. add code to the constructor to increment this variable every time an account is created. c. add a static method getnumaccounts that returns the total number of accounts. think about why this method should be static - its information is not related to any particular account. d. file testaccounts1.java contains a simple program that creates the specified number of bank accounts then uses the getnumaccounts method to find how many accounts were created. save it to your directory, then use it to test your modified account class.